Japanese Knotweed Hotspots In The UK - 2021

This article will delve in to some of the Japanese Knotweed hotspots locations all over the UK. As Japanese knotweed is known to be one of the most destructive plant species in the UK, it’s beneficial to be aware of the locations where it is most common. Although, it’s important to note that this weed can grow almost everywhere in the UK and the following list is not just exclusive to these areas. 

Japanese Knotweed growth

Specifically in Bolton, Japanese knotweed has spread rapidly within the area. This has lead to it becoming the number one spot for Japanese knotweed infestations with a whopping 621 outbreaks in a 4km radius.

Next on the list is the most populous city in South West of England, Bristol. Although the number of infestations is significantly less than Bolton, this location still has a reported 465 infestations within a 4km radius!

More precisely St Helens, comes in at number 3 on this list. With up to 440 infestations being reported within the 4km radius, it would be best to keep an eye out for this invasive species in this area.

Many areas of South Wales have actually made the top 10 list of hotspots for Japanese knotweed this year with the likes of Swansea in 7th position and Llanelli just before in 6th. However, currently sitting in 4th is Cardiff! This area has had 419 reported infestations within the 4km proximity.

5. Lancashire

Blackburn in Lancashire was placed at number 5 in the UK Japanese knotweed hotspots this year with 406 outbreaks within the 4km distance.

Photo of Japanese Knotweed

If you live in one of these areas, it may be advantageous to check the number of infestations in the proximity of your postcode and book a site survey to make sure you’re in the clear. Contact us today to book yours!

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